KR102100057B1 - Detachable contactor - Google Patents

Abstract

The present invention relates to a removable contactor for a plug in hole (PH) box of a booth duct capable of minimizing heating by improving contact with a conductor such as a busbar and the like. The removable contactor comprises: a plurality of brush members provided with a coupling unit; and a plurality of elastic members surrounding and elastically supporting a circumference of an insertion unit of each of the brush members.

Description

Detachable contactor {DETACHABLE CONTACTOR}

The present invention relates to a detachable contactor for a PH box of a booth duct. In more detail, the present invention is mounted on a booth duct branch device, and modularized parts minimize weight and cost, is easy to manufacture, and improves contact with conductors such as busbars to minimize heat generation. The present invention relates to a detachable contactor for a PH box.

Conventionally, a wiring method using a wire cable has been widely adopted as a power wiring method, but in recent years, as power demands of buildings such as high-rise buildings, apartments, and large-scale factories have rapidly increased, wiring by a bus duct using a busbar has been widely spread.

The bus duct is equipped with a bus bar that performs the same function as the conductor core included in the cable, and is capable of energizing a large amount of current. Originally, for wiring inside a large building or a large-scale factory, a wiring method using a bus duct is superior to wiring using a power cable, and space utilization, ease of installation and branching are superior. These booth ducts are widely used in places where relatively large amount of power is used because it is easy to expand and relocate, and it can be quickly recovered due to easy handling in case of an abnormality or accident on the power wiring of the busbar.

The bus duct system that replaces such a power cable is rapidly increasing in demand due to advantages such as large-capacity current transmission, efficient space utilization, installation and branch convenience, and power quality stability.

In addition, the booth duct system is a sandwich type booth duct stacked with busbars constituting the booth duct for the purpose of weight reduction, compactness, and the like, and a booth duct system having the same. Such a booth duct may have a structure that is connected through a connection kit at regular intervals depending on the shape or size of the space to be installed.

In order to supply electricity to a number of electrical devices installed inside a building with a complex structure, it is difficult to construct a distribution system by connecting these booth ducts themselves, so a branch device capable of branching electricity from the booth ducts is needed. As a device, a PH box (Plug in Hole box) is usually used.

The PH box is also referred to as a plug-in unit (PIU) or a tap-off box, and serves to supply branched electricity where necessary by connecting a number of cables after being electrically connected to the booth duct. .

By the way, in such a PH box, electrical branching is performed by mounting a plug-type contactor or the like. When contactors for power branching are detachably mounted on a busbar or connecting conductor of a bus duct, contactability in a contactor, etc. If this is not good, heat generation may increase, which may cause power quality problems.

In other words, the branch contactor used for power branching in the PH box, etc. is not connected by a method such as welding with a conductor such as a busbar, but uses an elastic or press-fit plug, so the contact area is unstable during construction. When this decreases, it seems that the fever is getting worse.

In addition, as the branching point of the bus duct is increased and the number of phases of the busbar is increased, the number of required connecting parts increases together, so a method of reducing the cost of the connecting parts and improving workability is required.

The present invention is mounted on a booth duct branch device, modularized parts, minimizes weight and cost, is easy to manufacture, and improves contact with conductors such as busbars. It is an object to solve the problem of providing a contactor.

In order to solve the above problems, the present invention is a detachable contactor mounted on the conductor of the booth duct in the PH box for electric power branch mounted on the booth duct, the insertion section is formed with an insertion space in which the conductor of the booth duct is inserted below A plurality of brush members provided with a fastening part to which a connecting conductor connected to the power switching part of the PH box is fastened; And, a plurality of elastic members surrounding the periphery of the insertion portion of each brush member to elastically support; includes, wherein the removable contactor is connected to the inner insertion space of the insertion portion of the plurality of brush members, each of which is an elastic member is connected to one It is possible to provide a detachable contactor that is formed to form an insertion hole and that a fastening portion of a plurality of brush members is stacked to form a single fastener.

In this case, the conductor of the booth duct is a tap conductor that is joined to the bus bar constituting the booth duct, and the minimum width of the insertion portion of the brush member may be smaller than the thickness of the tab conductor.

In addition, the insertion portion may have a shape that is increased after the width is reduced from the entrance to the inside.

Here, the fastening portion of the brush member may be formed of a plate shape, and the insertion portion of the brush member may be provided with a pair of branched gripping arms configured to face each other.

In addition, each of the brush members may be provided with a connecting portion connecting the insertion portion and the fastening portion in a folding shape.

In this case, three or more brush members may be provided, and the connecting portions of the two brush members disposed outside may be provided with steps in the stacking direction of the brush members, respectively.

In addition, when the number of the brush members is 5 or more, steps of each brush member other than one or two brush members disposed at the center are provided, and the width of each step is outward depending on the position of the brush member. It can increase over time.

Here, the fastening portion of the brush member is bonded in a stacked state in the form of a plate, and at least one fastening hole for fastening the connecting conductor may be formed.

In addition, the elastic member may be composed of a pair of elastic arms configured in a shape in close contact with the outer surface of the insertion portion of the brush member and a connecting portion connecting the upper end of the elastic portion.

Further, the brush member is made of any one of copper, silver, copper alloy or silver alloy, and its surface may be plated to prevent corrosion.

In this case, in order to solve the above problems, the present invention includes a detachable contactor that is detachably mounted on a conductor of a bus duct, in a PH box for power branching of the bus duct; A power switching unit for selectively blocking power branched from the booth duct; A connecting conductor connecting the power switching unit and the detachable contactor; And a branch conductor connected to the power switching unit and selectively branching power.

 In addition, the bus duct includes a bus bar stacked in a sandwich type, and the detachable contactor can be detachably mounted on a tab conductor bonded to a side of each bus bar.

The detachable contactor for the PH box of the booth duct according to the present invention is minimized in weight and cost, is easy to manufacture, and can be configured as a modular component according to capacity.

In addition, according to the detachable contactor for the PH box of the booth duct according to the present invention, it is provided with a plurality of brush members and each brush member individually adopts a structure for gripping a tab conductor or the like, so that it is in contact with a conductor such as a busbar. This can be improved to minimize heat generation of the detachable contactor in the PH box.

In addition, according to the detachable contactor for the PH box of the booth duct according to the present invention, since each brush member and the elastic member are fastened by an assembly method, a bonding process such as separate riveting can be omitted, thereby simplifying the manufacturing process. You can.

In addition, according to the detachable contactor according to the present invention, the modular brush members of various sizes and the same shape with different step widths according to positions assembled according to variables such as power divergence, width of the tap conductor, and width of the connecting conductor Each of the elastic members of the assembly can be configured with a new capacity and size to form a detachable contactor, thereby significantly reducing the cost for manufacturing a detachable contactor of various capacities.

1 shows an example of the end of the bus duct of the present invention.
FIG. 2 shows a state in which the PH box for power branch is mounted on the booth duct shown in FIG. 1, and FIG. 3 shows a state in which the PH box shown in FIG. 2 is separated from the booth duct.
4 is a state in which the cover member of the PH box shown in FIG. 3 is opened, and FIG. 5 is a perspective view showing a bottom surface of the PH box of the present invention.
6 and 7 show the disassembled state and assembly process of the removable contactor of the present invention.
8 to 10 show perspective, side and front views of the detachable contactor of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided to ensure that the disclosed contents are thorough and complete, and that the spirit of the present invention is sufficiently conveyed to those skilled in the art. Throughout the specification, the same reference numbers indicate the same components.

1 shows an example of an end of the booth duct 100 of the present invention.

The booth duct shown in FIG. 1 is a state in which the booth 130 is spaced apart at least once in the longitudinal direction of the enclosure 130 and the enclosure 130 accommodating a plurality of parallel arranged or stacked busbars 120. As a result, the male connection part 140 formed by exposing the conductor 121 may be configured.

The busbar 120 may be made of a conductor 121 such as copper or aluminum. The surfaces of the conductors 121 are each covered by an insulator 123 such as an epoxy coating and electrically insulated from each other. The busbar 120 is primarily insulated by covering the insulator 23 because a high current flows, and is protected by being accommodated in an isolated state from the outside inside the enclosure 130.

The configuration of the bus bar 120 may be variously configured according to the installation target or installation environment of the bus duct 100, the power capacity to be supplied, and the like. For example, as shown in FIG. 1, the busbar 20 may include four of R, S, T, and N, but the number of phases may be increased or decreased.

FIG. 2 shows a state in which the PH box 200 for power branch is mounted on the booth duct shown in FIG. 1, and FIG. 3 shows a state in which the PH box 200 shown in FIG. 2 is separated from the booth duct. do.

In addition, FIG. 4 shows a state in which the cover member of the PH box 200 shown in FIG. 3 is opened, and FIG. 5 shows a bottom perspective view of the PH box of the present invention.

A branch device is required to branch and supply the electric power supplied through the booth duct. As such a branching device, the PH box 200 may be applied.

In the case of a bus duct 100 in which a bus bar is stacked in a sandwich type, duct housings 130 are provided on upper, lower, and both sides to wrap the stacked bus bar, and a flange 132 is provided on the upper housing and lower housing 131. ) May be provided.

The PH box 200 may be mounted on the flange 132.

The PH box 200 may be fixed to the booth duct 100 by various types of fixing members 40 and 45.

As shown in FIG. 3, the PH box 200 may include a housing 220 provided with a cover member 210, and the booth duct 100 at a position where the PH box 200 is mounted. The tab conductor 150 connected to the busbar may be provided by being exposed inside the tab conductor frame 160.

The tap conductor 150 is an object to which the detachable contactor 300 of the present invention is mounted in the PH box 200 for branching the bus duct power.

The tab conductor frame 160 provided in the booth duct may be provided with an open housing and a cover 161 for selectively shielding the opening of the housing. The cover 161 may be mounted by a hinge or the like, and configured to be opened only when the PH box 200 is mounted, so that when the PH box 200 is not in use, the opening of the engaging portion is sealed. It is preferably configured to be.

As illustrated in FIG. 4, a power switching unit 250 may be provided inside the PH box 200 to selectively cut off power branched from the bus duct.

The power switching unit 250 is configured in the form of a switch, the front end of the power switching unit 250 is connected to a connecting conductor 240 connected to the detachable contactor 300 mounted on the tap conductor 150, the rear end A branch conductor 260 to which a power branch cable or the like is connected may be provided.

The branch conductor 260 may be connected to a booth duct or a cable for supplying power to a place where power is required to be branched, and the power supply may be controlled by the power switching unit 250.

The branch conductor 260 may be connected to a cable or booth duct for branching and supplying electric power, and a detachable housing cover 230 is provided at one side of the housing 220 to a passage through which cables are introduced when necessary. Can be utilized.

The tap conductor 150 is a conductor that is bonded to each bus bar by welding or the like for power branching of the bus duct where the bus bars are stacked in a sandwich type. The tap conductors 150 are provided protruding from the above-described tap conductor frame 160, and when the PH box 200 is mounted, the tap conductors 150 and the PH box 200 are electrically connected. The detachable contactor 300 of the invention can be mounted.

The detachable contactor 300 may be mounted in a detachable form on a tap conductor 150 bonded to each busbar, may be electrically connected to the power switching unit 250, and a detachable contactor 300 The connection conductor 240 may be used for electrical connection of the power switching unit 250.

The connecting conductor 240 is a busbar-shaped conductor and may be configured to be bent according to the space inside the PH box 200.

In the case of the tap conductor 150, it is connected by a method such as busbar and welding, and the connecting conductor 240 can be connected to the detachable contactor 300 and the power switching unit 250 with a bolt fastening method. The power switching unit 250 and the branch conductor may also be connected in a bolted manner in a surface contact state. Therefore, the connecting conductor 240 is fastened with a bolt or the like in a surface contact with the detachable contactor, so that the contact area is sufficiently secured, so that heat generation of the conductor may not be a problem.

However, in the case of the detachable contactor 300, in the case where the PH box 200 is mounted on the booth duct 100, it is often configured in the form of an elastic clip to improve workability.

That is, as shown in the open perspective view and the bottom perspective view of the PH box 200 of FIGS. 4 and 5, the detachable contactor 300 fastened to the connection conductor 240 of the PH box is exposed to the bottom of the PH box However, the lower portion is configured in the form of an elastic clip to mount the PH box 200 on the upper part of the booth duct, and at the same time, the detachable contactor 300 and the tap conductor 150 exposed to the lower surface of the PH box 200 are easily mounted and connected. It may be, but the power of the booth duct is high and heat may be generated.

Particularly, when the detachable contactor 300 is configured in the form of an elastic clip, the contact area with the detachable contactor 300 is rapidly reduced even when the mounting direction of the tab conductor 150 in the form of a plate is slightly distorted. This can be deepened.

However, the detachable contactor 300 according to the present invention is composed of a plurality of brush members 320, as will be described later, to solve problems such as heat generation.

And, as shown in FIG. 5, the lower portion of the detachable contactor 300 is exposed on the lower surface of the PH box 200, and the above-described tap conductor frame 160 or booth duct is disposed around the exposed detachable contactor 300. Mounting frames 213 and 214 that are fastened to 100 may be further provided.

6 and 7 show the disassembled state and assembly process of the detachable contactor 300 of the present invention.

The detachable contactor 300 of the present invention is provided with an insertion portion 325 having an insertion space into which a conductor of a bus duct, for example, a tap conductor is inserted, and connected to a power switching portion of the PH box 200 at the top. Includes a plurality of brush members 320 provided with a fastening portion 321 to which the conductor 240 is fastened, and a plurality of elastic members 340 surrounding the insertion portion of each brush member 320 and elastically supporting it. And, the removable contactors 300 are connected to the inner insertion spaces of the insertion portions of the plurality of brush members, each of which is equipped with an elastic member 340, thereby forming one insertion hole 350, and of the plurality of brush members 320. It characterized in that the fastening portion 321 is stacked to be configured to form a single fastener (310). It will be described in detail.

As shown in FIG. 6, the detachable contactor 300 of the present invention may include a plurality of brush members 320 and elastic members 340 mounted to each brush member 320.

The detachable contactor 300 of the present invention shown in Figure 6 is composed of four brush members 320 and four elastic members 340, the number can be increased or decreased.

As shown in FIG. 6, the brush member 320 has an insertion portion 325 of a structure in which facing grip arms 326 for forming the insertion hole 310 of the detachable contactor 300 are detached from the lower part and detachable. It comprises a fastening part 321 for forming a fastener 310 for fastening bolts or the like of the contactor 300, and a connecting part 323 connecting the inserting part 325 and the fastening part 321. Can be.

The fastening part 321 of each brush member 320 is formed of at least one fastening hole for fastening bolts of the connecting conductor by a method such as perforation, and the removable contactor 300 in which the brush members 320 are stacked and configured ) May be provided at a corresponding position to be one fastening hole 311h (see FIG. 9) in the fastener 310.

In addition, an insertion portion 325 having a branched structure may be provided under each brush member 320 so that the gripping arm 326 faces each other. The insertion portion 325 of the plurality of brush members 320 constitutes an insertion port 350 (see FIG. 9) having one connected insertion space S of the detachable contactor 300 in which the internal insertion space is in communication. You can.

The brush member 320 is made of any one of copper, silver, copper alloy, or silver alloy, and its surface may be plated to prevent corrosion, and the insertion portion 325 and the fastening portion 321 ) May be connected by a connection part 323. In addition, each of the brush members 320 may be manufactured through sheet metal processing or the like, and the insertion part 325, the connection part 323, and the fastening part 321 may be integrally formed. .

The insertion portion 325 is a pair of gripping arms 326 facing each other to form an insertion space therebetween, and the connection portion 323 is folded in the direction of the insertion portion 325 from the fastening portion 321 It can be composed of.

And, in the embodiment shown in Figure 6 or 7, the brush member 320 is provided with four, the connecting portion 323 of the two brush members 320 disposed on the outside is the stacking direction of the brush member 320 As a step is provided, the fastening part 321 is stacked in close contact, and the insertion part 325 is arranged to connect each receiving space side by side to be configured to form one insertion hole 310.

Here, the number of brush members 320 constituting the detachable contactor 300 may be increased or decreased depending on variables such as the amount of power branching, the width of the tap conductor, and the width of the connecting conductor. For example, when the width of the tab conductor is large, the number of brush members 320 may be 5 or more, or when the width of the tab conductor is small, the number of brush members may be 2 or 3, respectively.

Therefore, conventionally, the contactors were manufactured according to sizes or capacities according to variables such as the amount of power branching, the width of the tap conductor, the width of the connecting conductor, etc. Contactors can solve this problem.

Specifically, when the number of the brush members 320 is three or more, two brush members provided on the outside (outermost), as shown in the embodiment with four brush members of FIGS. 6 and 7 Steps are provided at the connection part of 320, so that the fastening part can be in close contact, and furthermore, when the number of brush members 320 is 5 or more, steps of each brush member other than one or two brush members disposed at the center may be provided. Is provided, but the width of the step may be changed according to the position of the brush member (the width of the step increases as it goes outward).

That is, the detachable contactor 300 according to the present invention assembles a modular brush member of various sizes in which the width of the step is changed according to a position to be assembled according to variables such as power divergence, width of the tap conductor, and width of the connecting conductor. Therefore, since it can be configured with a new capacity and size, the cost for manufacturing the detachable contactor 300 having various capacities can be greatly reduced.

Even in this case, since the shape of the insertion portion of each brush member 320 and the shape of the elastic member mounted on the insertion portion can be configured identically, it is possible to correspond to the detachable contactors 300 having various capacities and sizes.

In addition, an elastic member 340 may be attached to each brush member 320. That is, instead of the method of providing the elastic member 340 on one detachable contactor 300, the elastic member 340 is mounted on each brush member 320, so that the insertion portion 325 of the brush member 320 is mounted. It can be configured so that the elasticity can be adjusted individually as it opens.

The elastic member 340 is a pair of elastic arms 341 and a connecting end connecting the upper end of the elastic arm 341 is configured to be in close contact along the outer surface of the insertion portion 325 of the brush member 320 It may be composed of a portion 343.

Accordingly, as shown in FIG. 7, each elastic member 340 is mounted on the brush member 320, and the brush members 320 are stacked so that the fastening portions 321 are joined and shown in FIGS. 8 to 10. As shown, one fastener 310 may be formed.

Each elastic member 340 is connected to a pair of elastic arms 341 and a connecting portion 343 connecting them, and the elastic member 340 is outside the insertion portion 325 of the brush member 320. It is mounted to be wrapped, and the surfaces of the inserts 325 of the elastic member 340 and the brush member 320 may be provided with seating grooves or protrusions for positioning during assembly.

For example, a seating groove (g1) in which the connecting portion 343 of the elastic member 340 is seated is formed on a side surface of the insertion portion 325 of the brush member 320 shown in FIG. 320) and after the assembly of the elastic member 340, it is possible to prevent the elastic member 340 from being separated. In addition, a seating groove (g2) and a locking protrusion (p) are provided on the outer circumferential surfaces of the gripping arm 326 of the brush member and the elastic arm 346 of the elastic member, respectively, to provide positioning and departure prevention functions.

In addition, the elastic arm 346 is configured to be in a shape capable of being in close contact with the shape of the gripping arm 326 and stably elastically supports the gripping arm 326 in the insertion process and the insertion state of the tab conductor.

8 to 10 show perspective, side and front views of the detachable contactor 300 of the present invention.

The removable contactor 300 may be completed by stacking a plurality of brush members 320 on which the elastic members 340 are mounted to form a single fastener 310 by joining the fastening parts 321. .

In the embodiment shown in FIGS. 8 to 10, the fastener is shown as an example of being assembled by being stacked in a flat plate shape, but it is also possible to be configured in a bent shape according to the needs of the fastening direction and the like inside the PH box.

The detachable contactor 300 may be composed of a fastener 310 at the top and an insertion port 350 at the bottom. The insertion hole 350 constituting the detachable contactor 300 may be configured in such a way that the insertion portions 325 of the plurality of brush members 320 are elastically supported by each elastic member 340 and arranged side by side. .

As described above, the conductor of the booth duct may be a tap conductor 150 joined to a bus bar constituting the booth duct. In addition, in the case of a bus bar in which the bus duct is spaced apart by an air insulation or epoxy insulation method other than a sandwich type, the tap conductor 150 is omitted and the detachable contactor 300 of the present invention is directly mounted on each bus bar. This can also be used.

The detachable contactor 300 of the present invention shown in FIGS. 8 to 10 is a plurality of brush members 320 and an elastic member 340 mounted to each brush member 320, unlike a method of configuring a conventional contactor ), The lower conductor 325 of each brush member 320 is connected to the tab conductor 150 inserted into one insertion port 350 is configured in an uneven or wrong direction Even when inserted, each brush member 320 can be flexibly adjusted in the contact direction or angle according to each position, thereby improving overall electrical conductivity.

In addition, the conventional contactor adopts a structure that clamps each tab conductor 150 as a whole, and the elastic member 340 for improving contact property also adopts a structure that supports conductors or the like constituting the contactor as a whole. There is a problem in that a structure having a large thickness and weight is required because elastic force is required.

In addition, when the elastic member is mounted on the conventional contactor, a separate riveting process is required using a method such as riveting, but the brush member and the elastic member of the present invention can be mounted by simple assembly, thereby simplifying the process. Effects can also be obtained. The prior art to which such riveting was applied acts as an unstable element on the energizing path due to riveting.

However, in the case of the detachable contactor 300 of the present invention, each brush member is attached to each brush member 320 while reducing the weight, volume and thickness of the elastic member 340, but each brush member Proper elasticity may be provided to the 320 to ensure the contactability of each brush member 320.

In addition, the detachable contactor 300 of the present invention has a feature in which the brush members 320 each equipped with an elastic member 340 are stacked and assembled so that the respective insertion portions 325 are connected. That is, each brush member 320 has an insertion portion 325 at the bottom, and a plurality of insertion portions 325 are connected to one insertion hole 310 through which one tap conductor 150 can be inserted. ).

As described above, the conductor of the booth duct is a tap conductor 150 that is joined to the busbars constituting the booth duct, and the minimum width or a plurality of inserts of the insertion portion 325 of each brush member 320 ( 325) the minimum width (w1) of the insertion hole 310 of the detachable contactor 300 formed by being connected is smaller than the thickness of the tap conductor 150 so that when the tap conductor 150 is inserted, the tap conductor 150 ) Can be adhered to both surfaces. And, as shown in Figure 9, the insertion portion 310 of the removable contactor 300 formed by connecting the insertion portion 325 or a plurality of insertion portion 325 of the brush member 320 is at the entrance It is configured to have an increased shape after the width is reduced inward, so that the insertion resistance of the tap conductor 150 can be minimized.

In addition, the detachable contactor 300 shown in FIG. 10 is composed of four brush members 320, of which the connecting portions 323a of the two brush members 320a disposed on the outside are in the stacking direction of the brush members. Since a step is provided, the insertion portion 325 of each brush member 320 may be arranged with each receiving space side by side to form one insertion hole.

Although this specification has been described with reference to preferred embodiments of the present invention, those skilled in the art variously modify and change the present invention without departing from the spirit and scope of the present invention as set forth in the claims set forth below. You can do it. Therefore, if the modified implementation basically includes the components of the claims of the present invention, it should be considered that all are included in the technical scope of the present invention.

100: booth duct
200: PH Box
300: detachable contactor

Claims (12)

In the detachable contactor mounted on the conductor of the booth duct in the PW box for power branch mounted on the booth duct,
A plurality of brush members provided with an insertion portion in which an insertion space in which a conductor of a busduct duct is inserted is provided at a lower portion, and a connection portion connected with a connection conductor connected to a power switching portion of a PH box at an upper portion; And,
Includes a plurality of elastic members surrounding the insertion portion of each of the brush member and elastically supported;
The detachable contactors are configured such that the inner insertion spaces of the insertion portions of the plurality of brush members, each of which are equipped with elastic members, are connected to form one insertion hole, and the fastening portions of the plurality of brush members are stacked to form one fastening hole,
The fastening portion of the brush member is formed in a plate shape, and the insertion portion of the brush member is provided with a pair of branched gripping arms configured in an opposite shape,
The brush member is provided with three or four, and the connecting parts connecting the insertion parts and the fastening parts of the two brush members disposed outside are provided with steps in the stacking direction of the brush members, respectively.
When the number of the brush members is 5 or more, a step is provided at a connection portion of each brush member other than one or two brush members disposed at the center, and the width of each step is outward depending on the position of the brush member. Removable contactor, characterized in that it increases gradually. According to claim 1,
The conductor of the booth duct is a tap conductor joined to a bus bar constituting the booth duct, and the minimum width of the insertion portion of the brush member is smaller than the thickness of the tab conductor. According to claim 2,
Removable contactor, characterized in that the insertion portion has a shape that is increased after the width is reduced inward from the entrance. delete delete delete delete According to claim 1,
Detachable contactor, characterized in that the fastening portion of the brush member is joined in a stacked form in the form of a plate, and at least one fastening hole for fastening the connecting conductor is formed. According to claim 1,
The elastic member is a removable contactor, characterized in that it consists of a pair of elastic arms configured in a shape in close contact with the outer surface of the insertion portion of the brush member and a connecting portion connecting the upper end of the elastic portion. According to claim 1,
The brush member is made of any one of copper, silver, copper alloy or silver alloy, the surface of which is detachable contactor characterized in that the surface is plated to prevent corrosion. In the PH box for power branching of the bus duct,
A detachable contactor according to any one of claims 1 to 3 and 8 to 10, which is detachably mounted to the conductor of the bus duct;
A power switching unit for selectively blocking power branched from the booth duct;
A connecting conductor connecting the power switching unit and the detachable contactor; And,
And a branch conductor connected to the power switching unit and selectively branching power. The method of claim 11,
The booth duct includes a sandwich bar stacked in a sandwich type, and the detachable contactor is detachably mounted to a tab conductor bonded to the side of each bus bar.

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